would date from 1880 however the lack of markings on the movement (there is no brand or movement numbers) lead me to have doubts on its authenticity.
However you never know with these pocket watches so I suggest you send it to VC for restauration and they can let you know if the watch is genuine or not and if it is they can restaure it perfectly for you.
Hope this helps and welcome to the Lounge!
Thank you Alex for your welcome to the Lounge and for your answer.
Now I know what will do next holiday in swiss